Hatchway-door-operating mechanism



(No Model.)

' E. A.. JACOBS.

HATGHWAY DOOR OPERATING MEGHANISM. No. 262,783.

WITNESSBS M W. w

UNITED STATES PATENT OEETCE.

ERNST AUGUST JACOBS, OF CHIGAGO,'ILLINOIS.

HATCHWAY-DOOR-OPERATING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 262,783, dated August15, 1882,

I Application filed May 20, 1882. (No model.)

To all whom it may concern:

Beit known that I, ERNST AUGUST JACOBS, a citizen of the United States,residing at Ghicago, in the county of Cook and State of Illinois, haveinvented new and useful Improvements in Hatchway-Door-OperatingMechanism, of which the following is a specification.

Thisinvention relates to mechanism for opening and closinghatchway-doors automatically in the ascent or descent of the elevatorcar or platform working in the hatchway; and it consists in anopening-lever and a closing-lever arranged respectively below and abovethe hatch-hole of each floor, two operating-levers arranged on one edgeof the hatch-hole in engagement with each other, one or two verticalrods connecting both the opening-lever and the closing-lever toA one ofthe operating-levers, hinged doors carrying levers which` engage theoperating-levers, and an elevator-car having one of its sides providedwith devices to engage the opening and closing levers on opposite sidesof their fulcra, as hereinafter more fully set forth, so that when theelevator-ear ascends or descends, and before it reaches the hatch-hole,the doors are opened,\vhile when the car has passed through thehatch-hole the doors are closed.

This invention is illustrated iu the accompanying drawings, in whichFigure l shows the operating mechanism in side view, partly in section,the plane of section being indicated by the line :v x, Fig. 2. Fig. 2 isavertical central section through Fig. 1, as indicated by the line y y.Fig. 3 is a horizontal section.

Similar letters indicate corresponding parts.

The letter A designates the hatchway of a building; B, one of the oors,having the usual hatch-hole provided with two hinged doors, C.

D indicates the elevator-car.

E is the opening-lever and F the closinglever, arranged one below andthe other above the hatch-hole, they being pivoted to the building onone side of the hatchway, as shown in Fig. 2. Y

G G' are the operating-levers, arranged on one edge of the hatch-hole;H, the vertical rods whereby the opening and closing levers areconnected to one of the operating-levers; I, the door-levers engagingthe operating-levers, and J J the devices of the car serving to engagethe opening and closing levers.

The operating-levers Gr G are madeinform of double-toothed segments, andthey engage each other by one set of their teeth, the other set being amedium for the engagement therewith of the door-levers Lwhich latter aremade in the form of single-toothed segments. These door-levers areconnected to the doors at one end thereof, and in such a manner that'thefulcra of the levers are in the horizontal plane of the pivots forming'the door-hinges.

The rods H are pivoted to the opening and closing levers E F at theiropposite ends,while they are pivoted to the operating-lever G atintermediatepoints. Onesueliconnecting-rod will answer the requiredpurpose; but I prefer to use two rods in order to distribute the strainon the levers to which the rods are connected, and when two rods areused they are arranged on opposite sides of the fulcra of the levers, asshown. The opening and closing levers EF are both made in form of atoothed segmentat one end, the segment of onelever, however, being on anopposite side of its fulcrum to that ot' the other, and thelever-engaging devices J J consist of racks which are secured to oneside of the carin suitable positions to catch into the segments in themovements of the car, the rack J being above the rack J In the ascent ofthe elevator-car the rack J engages the opening-lever E before the carreaches the hatch-hole, and swings such lever in the direction of thearrow shownin the upper part of Fig. l, when this lever acts on theoperating-lever Gr through the rods H, and thence ou the operating-leverG andthe doorlevers to raise or open the doors, while when the car haspassed through and risen above the hatch-hole a suicient distance therack J acts upon the closing-lever F to turn the same in the directionindicated,when this lever acts on the operating-levers and door-leversin a reverse direction to the opening-lever, thus closing the doors. Inlike manner the doors are opened and closed iu the descent of thecar-that is to say,`the doors are opened before the car reaches thehatch-hole and closed after it has passed through it, the lever Fbecoming the opening-lever and E the closinglever.

It will be noticed that the mechanism above described is highlyeffective in its operation ICO and extremely simple in its construction,thus being comparativelyinexpensive.

It is preferred to use the teeth for the engagement of the several partswith each other; but :L good result can be obtained also by frictionalcontact of' the parts; or the reversing devices J J can be made in formof tappets to displace the opening and closing levers in the passage ofthe car.

What I claim as new7 and desire to secure by Letters Patent, is-

The combination, substantialy as hereinbefore set forth, of theopening-lever and closing-lever arranged respectively ybelow and abovethe hatch-hole, the operating-levers zu'- ranged on one edge of thehatch-hole in en-

